2025 Toyota Corolla Fuse Box Diagram & Amperage
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Quick Answer
The 2025 Toyota Corolla typically has three main fuse box locations: under the hood, under the dashboard (driver's side kick panel), and in the trunk/cargo area.
Under-Hood Fuse Box
The under-hood fuse box, often located near the battery, primarily houses fuses and relays for critical powertrain and high-current systems. Always refer to the diagram on your fuse box lid for exact placement as variations can occur.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| EFI NO.1 | 10A | Red | ECM/PCM, Ignition (Main) |
| FUEL PMP | 15A | Blue | Fuel Pump |
| IGN | 10A | Red | Ignition System |
| STARTER | 20A | Yellow | Starter Relay Coil |
| H-LP RH | 10A | Red | Right Headlight (Low Beam) |
| H-LP LH | 10A | Red | Left Headlight (Low Beam) |
| H-LP HI RH | 10A | Red | Right Headlight (High Beam) |
| H-LP HI LH | 10A | Red | Left Headlight (High Beam) |
| TAIL | 10A | Red | Tail Lights, Parking Lights |
| ABS NO.1 | 50A | Red | ABS Motor |
| ABS NO.2 | 30A | Green | ABS Solenoids |
| BLOWER | 40A | Green | Blower Motor |
| A/C MGC | 10A | Red | A/C Magnetic Clutch |
| RAD NO.1 | 20A | Yellow | Radio/Infotainment System (Main) |
Common Under-Hood Relays:
- EFI Relay: Powers the Engine Control Module (ECM) and related sensors.
- Fuel Pump Relay: Controls power to the fuel pump.
- Starter Relay: Engages the starter motor.
- H-LP RH/LH Relays: Control the right and left headlights.
- A/C MG CLT Relay: Activates the A/C compressor clutch.
Dashboard Fuse Box (Driver's Side Kick Panel)
This fuse box, typically found behind a removable panel on the driver's side, manages fuses for interior accessories and cabin electronics. Exact fuse assignments may vary by trim level and options; consult your owner's manual and the fuse box lid.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| ECU-IG1 | 10A | Red | ECM/PCM (Ignition Switched) |
| METER | 10A | Red | Instrument Cluster |
| CIG | 15A | Blue | Cigarette Lighter / 12V Outlet |
| PWR OUTLT | 15A | Blue | Power Outlet |
| RADIO | 10A | Red | Radio/Infotainment (Accessory) |
| WIPER | 20A | Yellow | Windshield Wipers |
| WASHER | 15A | Blue | Windshield Washer Pump |
| STOP | 10A | Red | Brake Lights |
| DOME | 10A | Red | Interior Dome Lights |
| SRS AIRBAG | 10A | Red | Airbag System |
| CABIN | 7.5A | Brown | Various Interior Cabin Systems |
| TRAILER | 30A | Green | Trailer Brake Controller (if equipped) |
Trunk/Cargo Area Fuse Box
Depending on the specific trim and options of your 2025 Toyota Corolla, there might be an additional fuse box located in the trunk or cargo area. This box often handles power for rear accessories, power outlets, or specific entertainment systems. Always check your owner's manual or the vehicle itself for its presence and specific layout.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| P.OUTLET 2 | 15A | Blue | Rear Power Outlet |
| HTR | 10A | Red | Rear Window Defogger (Relay Coil) |
| AUDIO AMP | 20A | Yellow | Premium Audio Amplifier |
How to Test a Fuse
- Safety First: Ensure the vehicle's ignition is off before testing or replacing fuses.
- Locate the Fuse: Identify the suspect fuse using the diagrams above and your vehicle's fuse box legend.
- Visual Inspection: Pull the fuse out. Many fuses have a visible wire inside. If this wire is broken or melted, the fuse is blown.
- Multimeter Test (Recommended):
- Set your multimeter to the continuity or ohm (Ω) setting.
- Touch the probes to the two metal prongs on top of the fuse.
- A good fuse will show a reading of near zero ohms or continuity (a beep). A blown fuse will show an open circuit or no reading.
- Replace: Always replace a blown fuse with one of the exact same amperage rating and type. Using an incorrect fuse can cause serious electrical damage or fire.
Common Blown Fuses on This Vehicle
While fuses can blow for various reasons, some circuits are more prone to issues due to their usage or the components they protect:
- CIG/PWR OUTLET Fuses (15A): These are common culprits due to high-drain devices being plugged in or faulty accessories.
- What to check first: Disconnect any devices from the outlets and try a new fuse. If it blows again, there might be a short in the outlet or wiring.
- STOP Fuse (10A): This fuse protects your brake lights. If your brake lights stop working, this is a prime suspect.
- What to check first: Visually inspect your brake light bulbs for signs of being burnt out before replacing the fuse.
- RADIO Fuses (10A/20A): Issues with aftermarket radio installations or short circuits within the infotainment system can cause these to blow.
- What to check first: If you've recently installed an aftermarket radio, re-check your wiring. If not, consider if any liquid spills or impacts occurred to the radio.
- BLOWER Fuse (40A): A failing blower motor or obstructions preventing its free movement can cause it to draw excessive current and blow this fuse.
- What to check first: Listen for any unusual noises from the blower motor when attempting to use the fan. Check for any debris in the cabin air filter housing.
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Before you pull a fuse on the 2025 Toyota Corolla
- Use the label printed on the panel cover or the owner's manual for your exact build. Layouts change with options, model year and build date, so a chart for another truck can be wrong.
- Replace a blown fuse only with the same amp rating. A larger fuse can let wiring overheat.
- A fuse that blows again right away means a short or failing component downstream. Find the cause before replacing it again.
- A good fuse doesn't prove the circuit works — relays, grounds and connectors fail too.
- Disconnect the battery before working near high-current fuses or cables.
Learn more: How fuses, relays and truck electrical systems work
More specs for the 2025 Toyota Corolla
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2025 Toyota Corolla Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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